On February 13, 1890, Professor James T. Dougherty of De Soto patented a chalk eraser on blackboards.
This post was contributed by Ross Malone. A historian and a retired school teacher, Ross has authored many books about Missouri’s history, weird facts, and folk tales. He has also written children’s historical fiction. Visit his website, and buy his books in the Missouri Life store.
Image from Flickr by Sharat Ganapati licensed under CC 2.0
